ninman
·No, of course no-one would expect quartz watch accuracy - but if a watch loses or gains (say) 30 seconds a day, that can become significant over the course of a week or month. A watch is a tool that needs to be able to show the correct time. I suppose one could just re-set the time every few days - but using your car analogy - if your car tyres were excessively wearing due to incorrect alignment - the correct thing to do would be to get the tracking and alignment set correctly - not to live with the poor handling and tyre wear. 😀
There are many mechanical watches that gain or lose around 30 seconds a day, e.g. Seiko watches, entry level eta movements.
By the standards of mechanical watches, the 321 movement is pretty good.
Honestly though, accuracy really isn't that big of a deal. I mean do you actually need to know the time to within 10 seconds a day? In my opinion, most people don't.
Adjusting the time every once in a while is part of the charm, and something I look forward to, because it gives me an excuse to interact with my watch.